@article{fdi:010081642,
  title = {{V}igna ({L}eguminosae) sensu lato : the names and identities of the {A}merican segregate genera},
  author = {{D}elgado-{S}alinas, {A}. and {T}hulin, {M}. and {P}asquet, {R}{\'e}my and {W}eeden, {N}. and {L}avin, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}remise of study: {T}he legume genus {V}igna and close relatives have highly elaborated floral morphologies that involve the coiling, bending, and intricate connection of flower parts. {B}anners, levers, platforms, and pumps have evolved that attract pollinators and then manipulate their movement. {G}iven this three-dimensional floral complexity, the taxonomy of {V}igna and relatives has been confounded by the study of mostly two-dimensional museum specimens. {A} molecular phylogenetic analysis was undertaken in the effort to resolve long-standing taxonomic questions centered on floral morphology. {M}ethods: {T}he phylogenetic analysis included cp{DNA} trn{K} and nuclear ribosomal {ITS}/5.8{S} ({ITS}) sequence variation. {T}he {A}merican species were comprehensively sampled and outgroups included {O}ld {W}orld relatives. {K}ey results: {T}he trn{K} and {ITS} data analyses concurred in resolving six well-supported clades of {A}merican {V}igna that are most closely related to other {A}merican genera: {D}olichopsis, {M}acroptilium, {M}ysanthus, {O}ryxis, {O}xyrhynchus, {P}haseolus, {R}amirezella, and {S}trophostyles. {T}hese 14 {A}merican clades ranked here as genera are resolved as sister to a clade comprising the mainly {O}ld {W}orld species of {V}igna. {C}onclusions: {A}merican {V}igna clades were reassigned to the genera {A}ncistrotropis, {C}ochliasanthus, {C}ondylostylis, {L}eptospron, {S}igmoidotropis, and the newly described {H}elicotropis. {V}igna sensu stricto in the {A}mericas now includes relatively few and mostly pantropical species. {E}laborate floral asymmetries are readily used to apomorphically diagnose nearly all of the {A}merican genera. {T}he age estimates of the extant diversification of the {A}merican and its {O}ld {W}orld sister clade are approximately coeval at ca. 6-7 million yr, which belies much greater floral variation in the {A}mericas.},
  keywords = {biogeography ; floral evolution ; geographic phylogenetic structure ; {P}haseolus ; phylogenetic systematics ; rates analysis},
  booktitle = {},
  journal = {{A}merican {J}ournal of {B}otany},
  volume = {98},
  numero = {10},
  pages = {1694--1715},
  ISSN = {0002-9122},
  year = {2011},
  DOI = {10.3732/ajb.1100069},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081642},
}